Machine



(No ModeL) 3 Sheets-Sheet 1. A. LAIDLAW. GRAIN GLBANING MACHINE. No. 443,366. Patented 1390.23, 1890.

(No Model.) 3 Sheets-Sheet 2.

A. LAIDLAW. GRAIN CLEANING MAGHINN.

No. 443,366. Patented Deo. 23, 1890.

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.W e e h S 3 (No Model.)

Patented Dec. 23, 1890.v

UNITED STATES.

PATENT OFFICE.

ALEXANDER LAIDLAV,

OF TORONTO, CANADA.

GRAIN-CLEANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 443,366, dated December 23, 1890.

Application filed January 8, 1890. Renewed October 30, 1890. Serial No. 369,770. (No model.)

To all whom, it may concern:

Beit known that I, ALEXANDER LAIDLAW, manufacturer, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have inventeda certain new and Improved Grain-Cleaning Machine, of which the following is a specification.

The object of the invention is to design a machine which will effectually accomplish within itself the combined Work of a separator,

scourer, and polisher; and it consists, essentially, of vibrating screens. arranged in connection with corrugated blades revolving in a perforated cylinder,spouts and air-legs being arranged in connection with the vibrating screens and perforated cylinder, and with a revolving brush arranged to finally act upon the grain before, it is discharged from the machine. l

Figure l is a perspective outside view of my improved grain-cleaner, a portion of the side being broken away to expose the exterior construction. Fig. 2 is a sectional elevation through y, Fig. 3. Fig. 3 is a cross-section through a b, Fig. 1. Fig. 4 is a cross-section through c d, Fig. l. Fig. 5 is a perspective detail of the scouring-blades.

A represents a shoe containing a suitable number of screens or sieves and deriving a vibratory movement through the revolving shaft B, or in any other of the known Ways for producing the said movement. The grain which is first placed on the sieves in the shoe A passes through the said sieves and is conveyed through the spout C into the perforated cylinder D, the exhaustfblast from the fan E acting upon the grain as it passes from the shoe A into the perforated cylinder D.

F is a shaft passing through the center of the perforated cylinderD and carried on suitable beariugs arranged as indicated. A series of corrugated blades G are xed to the shaft F, to which shaft the fan E is also secured. The grain which enters through the spout C into the cylinder D at one end is conveyed to the other end of the said cylinder by the revolving of the said corrugated blades, and during its progress through the said perscoured, and the dirt and other matter scoured from the grain is drawn by the action of the eXhaust-fanE from the grain and is discharged out of the spout II. Then the scoured grain reaches the end of the stationary perforated cylinder D, at which the grain-spout I is located, it is conveyed by the said grain'spout into the air-leg J, which conveys it onto the top sieve in the Vibrating shoe K. lVhile passing through the air-leg .I the exhaust action of the fan E acts upon the falling grain and conveys from the said grain any dustor small grain which may have remained in it after passing through the stationary perforated cylinder D. After passing through the sieves in the vibrating shoe K the grain is conveyed by the spout L (see Figs. 3 and 4) into the cylinder M, the bottom of which forms a corrugated concave and may be adjusted to or from the brush.

A rotating brush N revolves within the cylinder M in the direction indicated by arrow and carries the grain from the spout L to the mouth of the spout O, through which the grain, now thoroughly polished by the action of the brush N, is discharged from the machine.

I do not wish to confine myself to any particular means for imparting vibratory movement to the shoe K; but for the purpose of this specification I indicate in the drawings 'a revolving shaft P, by which the necessary vibratory movement is conveyed to the said slice.

The bottom of cylinder M has connected to or formed with it on each side arms M', in the ends of which are screws M2, adapted to engage the frame of the machine and by means of which the bottom of the cylinder may be adjusted vertically, as is evident.

That I claim as my invention is- Y l. In a grain-cleaning machine, the combination of the shoe carrying the sieves, the spout leading from said shoe, the perforated cylinder into which the spout discharges, having a discharge-spout at the opposite end thereof, the shaft passing through the cylinder and having the corrugated blades fixed forated cylinder thel grain is thoroughly thereto, the air-leg communicating with the dischargespout of the cylinder, the vibrating shoe carrying the screens and havinghr a discharge-spout, the cylinder into which the spout; discharges, and the liiolishing-brnsh therein, substantially as described.

2. In a grain-cleaning machine, the combination of the shoe carrying the screens, the spout leading therefrom, the cylinder into which the spout discharges, the shaft carryin the fan and a series of corrugated blades,

the vibrating shoe adjacent to the cylinder, the cylinder adapted to receive the material from said shoe, said cylinder having the lower part adjustable, and the brush in said cylinder, substantially as described.

Toronto, December 2S, 1880.

ALEXANDER LAlDLi/UV. In presence of- CHARLES C. BALDWIN, W. G. MCMILLAN. 

